Furnace



PATENT OFFICE.'

EDWARD BENEDIOT, OF BROOKLYN, NEIV YORK, ASSIGNOR TO THE THATCI-IER FURNAOE COMPANY,

NEWARK, NEINT JERSEY.

OF NEV YORK, N. Y., AND

FU RNAC E.

SPECIFICATION forming part of Letters Patent No. 576,650, dated February 9, 1897.

` Application iiled May 22, 1896. Serial No. 592,555. (No model.)

To all whom, t may concern:

Be it known that I, EDWARD BENEDIGT, a citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Furnaces; and I do hereby declare the following to be a full, clear, and

exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference beinghad to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

This invention relates to a new and useful hot-water heater or steam-boiler to be used for general heating purposes; `.and the invention has for its primary object to facilitate the heating of the water in a very eective manner.

The invention therefore consists in the novel features of construction and the general arrangements ofthe parts hereinafter fully set forth, and finally embodied in the claim.

The invention is illustrated in the accompanying sheets of drawings, in which- Figure l is a perspective view of my novel construction of furnace. Fig. 2 is another view of the same, illustrating the outer shell or casing in vertical section and the combined lower and top dome in side elevation. Fig. 3 is a horizontal section taken on line as in Fig. 2, and Fig. 4 is a similar section taken on line y in the same figure.

Similar letters of reference are Vemployed in all the above-described views to indicate like parts. Y

In said drawings, Aindicates the complete furnace, comprising therein a usual sheetmetal shell e, having a smoke-pipe a', a door CL2, ash-pit CL3, and any suitable form of grate a4. The lower casing a5 for the ash-pit is made 'of cast-iron and is provided with a top a6, havinga central openin g, j ust below which the grate-bars are arranged. On said top co6 is an annular rim or projection a7, which embraces the lower edge of the casing a and holds it in position on said top a6. Resting loosely upon said top a6 is the lower water dome c, which is preferably made in the shape illustrated in Fig. 2. Said dome, which is of cast metal, comprises therein an outer shell e' and an inner wall c2, as represented in section in the lower left-hand corner of said Fig. 2, which form the water-space c3 with which the inlet-pipe b is connected, substantially as shown. Said walls c and c2 are also connected by suitable Walls or partitions c4, which form suitable openings c5, through which the hot air and gases escape from the hre-pot portion cG into the space formed by the outer shell a, surrounding said dome, and from which the gases can escape into the smoke-pipe a, as will be more fully described hereinafter. In the front of said dome c is an opening c7,

through which the coal is passed to be de-V posited in the fire-pot c6. Said lower dome c is formed at the top with a neck cs, which has an opening therein communicating with the water-space c3 between the walls e and c2 of the dome, and firmly secured in position on said neck in any well-known manner, but preferably by being screwed on a thread on said neck cs, is an upper hollow dome d. Said dome is preferably cylindrical in shape, but may be of any other desirable shape, having its upper and lower sides preferably flat. Extending entirely through said upper dome d are suitable flues d', through which the hot air and gases can be made to pass to the space over said upper dome d and down through a semicircular opening d2, formed in the side of said dome d, whence they can escape into the smoke-pipe a', as will be clearly evident. Said opening d2 in the upper domed is directly back of the .opening in the smokepiped.

As will be seen from Figs. 2 and 3, e is a damper, which is pivoted directly beneath said semicircular opening d2 and is operated by a rod e', pivoted at e2 to the under side of said damper c; but a handle e3 on one of the journal-pins e4 of the damper may be ernployed to turn said damper in the usual manner. When said damper e is closed, an indirect draft is the result produced by the gases and heat coming from the fire-pot c6 through the openings c5, passing all around the lower dome c and under the upper dome d, through the ilues LZ' therein, and into the space above said dome d, into the opening cl2 and the smoke-pipe a, as will be clearly evident.

To produce a direct draft when starting a fire in the fire-pot and to produce a stronger draft, all that is necessary is to pull on the rod e' or the handle ci, connected with the damper c, causing the latter to stand in its opened position, (indicated in said Fig. 2,) and the gases and heat coming from the opening c5 in the lower dome c will pass directly into the smoke-pipe a without iirst passing through the iues d in the upper dome and around the dome, as has been described.

By the arrangement of the upper dome and the lower dome, connected by a comparatively small neck, it will be clearly evident that I have obtained a greater heating-surface, and by the arrangement of the damper c the hot air and gases surround the upper dome both on top and below and an efficient steam-generator or hot-water heater is the result. Connected with the top of said dome (l is the outlet-pige b', which passes through the upper portion of the shell o. to the radiators in the rooms to be heated.

Connected with the lower part of the dome C is a draw-off pipe b2, and connecting said pipe lf2 and b is a system of piping b3, in which I place a pressure-gage and water-indicator, substantially as shown in Fig. l.

Having thus described my invention, what I claim is- In a furnace of the class herein set forth, in combination, with a base, an outer shell or casing, a lower dome c, having walls e and e2 forming a water-space, and formed with a fire-pot c, partitions c4 connecting said walls c and c2, forming openings, as c5, in said dome, a narrow neck c8 at the top of said dome, having an opening therein, and an upper dome d secured on said neck and communicating with the opening in said neck, and flues d in said dome (Z, a semieylindrical opening cl2 in one side of said dome d, a damper e, and means for operating said damper, substantially as and for the purposes set forth.

In testimony that I claim the invention set forth above I have hereunto set my hand this 20th day of May, 1896.

EDWIARD BENEDICT.

Witnesses:

FREDK. C. FRAENTZEL, ALFRED L. DE Von. 

